Remove sales tax from a total
Enter the tax-inclusive total and the sales tax rate. The calculator shows the pre-tax subtotal, the tax portion, and how much of the total is tax versus actual selling price.
Use a quick reverse-tax scenario.
Calculator
Reverse Sales Tax Calculator
Remove sales tax from a total price when the tax-inclusive number is all you have. This is the fastest way to recover the pre-tax subtotal before you judge margin, profit, or selling-price quality.
Formula
How to reverse sales tax from a total
Pre-tax subtotal = Total with tax / (1 + Sales tax / 100)
Sales tax amount = Total with tax - Pre-tax subtotal
If the total is $108.25 and sales tax is 8.25%, divide by 1.0825 to get the pre-tax subtotal of $100. The remaining $8.25 is the tax portion.
Where it helps
- Backing tax out of receipt totals before margin or profit analysis.
- Recovering subtotals from marketplace or checkout screenshots.
- Checking whether a tax-inclusive number is commercially healthy.
Useful next step
Once you know the pre-tax subtotal, move into pricing math. That is the number you should use for margin, profit, and selling-price checks.